Hi,
If needed, can get evaluetion version from
http://www.winzip.com/. Works pretty much like in winrar. If you have winzip assigned to .zip files:
- double click the .zip to open it in winzip
- select and drag wanted files into winzip
- click Add button
If not, open winzip and choose File-Open Archive... and browse the wanted package. Then can drag new files into the .zip. Be sure to copy the new files into the root of the .zip (uncheck 'save full path info'), not into a subdirectory, or PS won't find the files.